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a program's states made on first injection, and the ECS stores started at 8 slots

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Maroon Lake's launcher watcher - a process that only spawns the game and waits - held 58 MB, 48 MB of
it MALLOC_SMALL. Measured with malloc stack logging it was not the state defaults but L_grow: every
program sized every property type's per-entity store to MAX_ENT (1024) slots at start, 1,583 stores,
entities or none. And every state record was made with its defaults in L_init_globals before Boot.

- emit_lazy.ludic: a program's (not the runtime's) state global is left out of L_init_globals, and
  every read of it calls @S_<global>(), which makes it on first call from its own initializer - after
  every registry and plain global, so a default may read them (the init-order crash cannot come back
  through a state). What a getter makes is declared (@lp_fdecl): a state first touched in play is made
  once and not judged as a frame's keep. A function value's trampoline calls the getter too.
- L_grow starts the stores at ECS_FIRST (8) and doubles as entities come, as it always did past MAX_ENT.

The watcher (with the game's watch step moved before the systems' defs): 57 MB -> 11 MB; the only
state it makes is UiState (14 KB). What is left: AppKit's window, opened by rt_init before main for any
windowed program (~4 MB), and the runtime's font, image and 2D inits (~1.2 MB).

Goldens: the arena, fence, value and json goldens; the 36 ui examples; 30 of the 32 ECS test cases
(sprite_render and sprite_atlas time out under a plain runner with the toolchain before this too).
Package tests: ludic.base, save, settings, i18n.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-29 14:14:05 +03:00
parent 90b23e11e9
commit 12fdc0717e
8 changed files with 57983 additions and 57067 deletions
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5
selfhost/backend/game/emit_ecs.ludic
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@ -4,6 +4,9 @@
# parts of compiler/back/ir_decl.c.
const MAX_ENT: int = 1024
# the stores' first size, doubled as entities come: one slot per property type is made for every
# program at start, so 1024 of them made ~1,500 stores 48 MB in a process that spawns nothing
const ECS_FIRST: int = 8
function has_systems() -> bool {
var i = 0
@ -171,7 +174,7 @@ function ecs_base(store: pointer) -> pointer {
function emit_ecs_grow() -> void {
emit("define void @L_grow(i32 %need) {\nentry:\n %cap = load i32, ptr @L_cap\n")
emit(" %ok = icmp sle i32 %need, %cap\n br i1 %ok, label %done, label %grow\ngrow:\n")
emit(` %c0 = icmp eq i32 %cap, 0\n %start = select i1 %c0, i32 {itoa(MAX_ENT)}, i32 %cap\n br label %dbl\n`)
emit(` %c0 = icmp eq i32 %cap, 0\n %start = select i1 %c0, i32 {itoa(ECS_FIRST)}, i32 %cap\n br label %dbl\n`)
emit("dbl:\n %nc = phi i32 [ %start, %grow ], [ %nc2, %dbl2 ]\n %enough = icmp sge i32 %nc, %need\n")
emit(" br i1 %enough, label %apply, label %dbl2\ndbl2:\n %nc2 = mul i32 %nc, 2\n br label %dbl\n")
emit("apply:\n %cap64 = sext i32 %cap to i64\n %nc64 = sext i32 %nc to i64\n")